Abstract: A system includes a gas turbine engine that includes a first combustor and a second combustor. The first combustor includes a first fuel nozzle disposed in a first head end chamber of the first combustor and a first fuel injector. The first fuel nozzle is configured to inject a first fuel and an oxidant into a first combustion chamber of the first combustor. The second combustor includes a second fuel nozzle disposed in a second head end chamber of the second combustor, a second fuel injector, and a second orifice plate disposed in a second fuel path upstream of the second fuel injector. The second fuel nozzle is configured to inject the first fuel and the oxidant into a second combustion chamber of the second combustor and the second orifice plate is configured to help reduce modal coupling between the first combustor and the second combustor.

Abstract: Methods, devices, and systems for a touch sensor or a capacitive sensing device to interact with external objects. One method utilizes a capacitive profile on the external object. Another method involves the further use of a capacitive sensor array for wireless communication with the external object.

Abstract: A capacitive sensor array may include a first plurality of sensor elements and a second sensor element. The second sensor element may include a main trace intersecting each of the first plurality of sensor elements to form a plurality of intersections each associated with a unit cell, where a contiguous section of the main trace crosses at least one of the plurality of unit cells. An area within the unit cell may include at least a portion of one or more primary subtraces branching from main subtrace, a plurality of secondary subtraces branching away from the one or more primary subtraces, and at least one tertiary subtrace branching away from at least one of the secondary subtraces.

Abstract: Embodiments described herein provide capacitive sensor arrays. The capacitive sensor arrays include a plurality of column sensor elements arranged in a plurality of columns and a plurality of row sensor elements arranged in a plurality of rows. The plurality of rows and the plurality of columns are arranged such that each of the row sensor elements is at least partially within a gap between adjacent ones of the column sensor elements. A capacitance between a first portion of one of the columns and an adjacent first portion of one of the rows is greater than a capacitance between a second portion of one of the columns and an adjacent second portion of one of the rows.

Abstract: Apparatuses and methods of sense arrays with non-uniform patterns are described. One capacitive-sense array includes a first set of electrodes and a second set of electrodes. The first set of electrodes intersect the second set of electrodes to form a unit cells each corresponding to an intersection of a pair of electrodes comprising one electrode from the first set and one electrode from the second set. At one of the second set of electrodes includes a non-uniform conductive pattern including a first region being located at the intersection of the respective unit cell and a distal region being at a location within the respective unit cell that is farther away from the intersection than the first region. The first region includes a first conductive surface area and the distal region includes a second conductive surface area that is greater than the first conductive surface area.

Abstract: Apparatuses and methods of adaptive resolution circuits are described. One apparatus includes an input node coupled to a capacitance sense pin coupled to an electrode of a sense array and a capacitance-sensing circuit coupled to the input node and comprising an integrator configured to measure a capacitance with a first resolution. An adaptive resolution circuit is coupled to the capacitance-sensing circuit and the input node and is configured to selectively modify an integration capacitance of the integrator to set the integrator to measure the capacitance with a second resolution.

Abstract: A method and apparatus perform a first scan of an input device and determine that a first signal profile received through the first scan is outside a range of a reference signal profile. The method and apparatus perform a second scan of the input device responsive to the first signal profile being outside the range of the reference signal profile and use a second signal profile received through the second scan to detect a presence of an input object at least proximate to the input device.

Abstract: A method and apparatus perform a first scan of an input device and determine that a first signal profile received through the first scan is outside a range of a reference signal profile. The method and apparatus perform a second scan of the input device responsive to the first signal profile being outside the range of the reference signal profile and use a second signal profile received through the second scan to detect a presence of an input object at least proximate to the input device.

Abstract: Apparatuses and methods of peak detection are described. One method measures touch data on a sense array, the touch data represented as multiple cells. The method performs multiple different peak-detection schemes on each of the cells to generate a list of one or more possible peaks in the touch data. The method selects one or more actual peaks from the list. The actual peaks are used to determine locations of touches proximate to the sense array.

Abstract: Embodiments described herein provide methods, devices, and systems for a touch sensor, or capacitive sensing device, interact with external objects. One method utilizes a capacitive profile on the external object. Another method involves the use of a capacitive sensor array for wireless communication.

Abstract: A method and apparatus determine a difference value, the determined difference value reflecting a difference between a plurality of presence values. In an embodiment, the method and apparatus perform an operation associated with the plurality of presence values, based on the determined difference value.

Abstract: A method and apparatus determine a plurality of regions, each of the plurality of regions having a detected change in capacitance value that meets or exceeds a threshold value. In an embodiment, the method and apparatus fit a shape to the plurality of regions and determine another region, the other region being within the fitted shape and not having the detected change in capacitance value that meets or exceeds the threshold value. The method and apparatus may assign an assigned change in capacitance value to the other region.